Default NetFlow Settings for S- and K-Series Systems

Default NetFlow Configuration Settings for S- and K-Series Systems provides a listing of the default NetFlow configuration settings for the S- and K-Series systems.

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Default NetFlow Configuration Settings for S- and K-Series Systems

Parameter Description Default Value
Cache Status Whether NetFlow caching is globally enabled or disabled. Disabled globally
Destination IP address The IP address of the NetFlow collector which is the destination of the NetFlow UDP packets. None
Export Interval The time out interval when the NetFlow cache is flushed and the data is exported, if the maximum number of entries has not been reached. 30 minutes
Export Version The NetFlow flow record format used when exporting NetFlow packets. Version can be either 5 or 9. Version 5
Inactive flow timer The number of seconds after a flow stops before NetFlow sends an export packet for that flow to the collector. 40 seconds (non-configurable)
Optional Export Data Export data types that are disabled by default. These data types include source and destination MAC addresses and VLAN IDs associated with the ingress and egress interfaces for the flow. Disabled
Port state Whether NetFlow is enabled or disabled on a port. Disabled
Refresh-rate The number of flow report packets sent before NetFlow retransmits a template to the collector when using NetFlow Version 9. 20 flow report packets
Timeout-period When using NetFlow Version 9, the number of minutes NetFlow waits before retransmitting a template to the collector. 30 minutes

Configuring NetFlow on S- and K-Series Systems provides a CLI example of a NetFlow setup. Steps 1 – 3 are required. Steps 4 – 6 are optional depending upon the needs of your configuration. All NetFlow commands can be configured in any command mode.

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Configuring NetFlow on S- and K-Series Systems

Step Task Command(s)
1 Enable NetFlow collection on the specified port and optionally specify the flow direction to be collected. set netflow port port_string enable [rx | tx | both]
2 Configure up to four NetFlow collector destination servers for this system. set netflow export-destination ip-address [udp-port]
3 Globally enable the NetFlow cache for this system. set netflow cache enable
4 Optionally, modify the active flow timer value for this system. set netflow export-interval interval
5 Optionally, change NetFlow record format between version 5 and version 9 for this system. set netflow export-version version
6 Optionally, enable NetFlow Version 9 MAC and VLAN export data. set netflow export-data enable {mac | vlan}
7 If using version 9, optionally modify the number of export packets sent that cause a template to be retransmitted by an individual S- or K-Series module and the length of the timeout period, in minutes, after which a template is retransmitted by all modules in the system. set netflow template {[refresh-rate packets] [timeout minutes]
8 Verify any configuration changes made. show netflow config